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- Table 1.
Authors’ suggestions for interpreting ACR appropriateness criteria8 and CAR guidelines9: Note that no guideline declares when a test is necessary. When in doubt, consult a radiologist.
CAR CATEGORY ACR SCORE FROM 1–9 AUTHORS’ SUGGESTION Indicated Usually appropriate (score 7–9) Request the most appropriate imaging study first. Always provide the radiologist with the relevant history and rationale to ensure the correct protocol is followed Indicated only in specific circumstances NA Follow specific recommendations or consider specialist referral Specialized investigation Might be appropriate (score 4–6) Avoid ordering; consider specialist referral or radiology consultation Not indicated Not usually appropriate (score 1–3) Avoid ordering -
ACR—American College of Radiology, CAR—Canadian Association of Radiology, NA—not applicable.
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